Dynamo cooling means



Jan 29, 1935. I L, A, KOCH, JR 1,989,139

DYNAMO COOLING MEANS Original Filed Nov- 5, 1932 attorney Patented Jan. 29, 1935 I I UNITED STATES PATENT OFFICE 1,9aa1a9 v DYNAMO coomvq MEANS Louis A. Koch, Jr., Louisville, Ky.

Original application November 5, 1932, Serial No. 641,481. Divided and this application Decemher- ,4, 1933, Serial No. 700,853

6' Claims. (Cl. 290-1) This invention is a division of my application ductance to the underneath side of the generator Ser. No. 641,481, filed November th, 1932, and openingv in order that cooling air will be forced pertains to providing an attaching apparatus to across the commutator with a minimum of turstandard enclosed dynamo electric machines inbulence and out of the other openings for 5 stalled on automotive vehicles without disturbing the pu pose, of oo t e interior or the en- 5' or making any alterationsin same.' erator, especially the commutator and brushes The main object is to instantly equip the for the purpose of increasing the volt ampere dynamo with effective air cooling means for the pu cap ity f s andard t k n r rs purpose of procuring with safety to the electrical without impairment from excessive heating which 10 components a greater volt ampere output than would result from a relatively excessive output in 10 that for which it was originally organized, by erms of n rmal c p ity, 11 W xac f om S nutilizing air currents incident to the operation emt r t upply he v increasing demands of the automotive vehicle and/or the associated f r h P n y electrical q p n W- elements of an internal combustion engine inmobiles. l5 stalled thereon. a It will be noted that the tube 18 and funnel 16 In the drawing 19 are equipped with a fllter 20 and that the Figure 1 represents a portion of an automotive p mouth of e funnel is Pleced in Sufficient internal combustion engine with a radiator coolproximity to the blades of fan 11 in l' that ing fan and a dynamo electric machine mounted y can be utilized to relieve e e 811 20 thereon and operated thereby.- portant part of its work, i. e. by reason of the 20 Fig. 2 is a plan view of a commutator opening heavy Pa entrained in the a being cover or window strap", somewhat foreshort- Pelled y he forces S p y the revolving Ian ened. such as dust and water as they strike the fan. Fig. 3 is anelevational view of Fig. 2. Evidence of the result of this function can be 20 Structure and operation found by observing the dirt ring formed on the 26 underside of an automobile hood by the radiator 1 Numeral 10 indicates a portion of an internal fan. There-is a selection of design at this Junccombustion engine,'11 a radiator cooling fan ture by organizing the fan for the purpose of mounted thereon and arranged to be driven by a throwing out or deflecting these particles by im- 30 belt from a rotating part of the engine. 12 is a pact and/or centrifugal force whlchis well under- 30 dynamo electric machine, flange mounted on to stood in the art, and simultaneously supplying gear case 13 in the conventional way, 14 are fins air for the engine and generator. Other portions projecting from the field housing of' the genof the air flow established by the fan will pass over erator, for the purpose of conducting internal the openings 15a and assist the above mentioned heat to the surface for radiation and dissipation air to pass through the generator. 85 by the air currents created by the moving vehicle The arresting and elimination of entrained waand/or those set up by the fan 11. 15 is a cover ter is an, important consideration. To this end for the conventional openings in the housing to the filter is placed at the neck of the funnel to pennit access for adjustment and service to the arrest not only the remaining damaging solid 40 commutator and brushes lodged immediately particles that have been carried beyond the fan, 40 thereunder. This cover strap preferably coinbut the major portion if not all of the water thus pletely encompasses the housing and is snapped carried'pver. Special attention is directed to the into placev by latch 16, however, other means for fact that water arrested by filter 20 will trickle readily securing can be substituted. This strap across its face as the minute particles consolidate is provided with openings, some of which are in drops sufilciently large to respond to gravity 45 closed with a foraminous material 15a, while one and flow to the inner face of funnel where they opening, as at 15b, is used to make connection continue to flow outwardly against the current with shell 17, which is shownfashioned for a of air on its way to effect the objective. Should bayonet connection with flexible air tube 18 filter medium be defective, lost or otherwise inwhich extends toward the other end of the gencompetent, loop 18 is provided as a settling chamerator, or forward end of an automotive vehicle, her for water that may pass beyond the filter,

where the opening is equipped with a funneled it being understood that this tube is composed of body 19 located adjacent the fan 11, in order ,the conventional flexible tubing, coiled from sheet that a portion of the air flow created thereby will metal and that while it will conduct air for the 5 be forceably directed into this funnel for conpurpose as indicated herein, water will seep or 2 leak through the seams and that the interior of the generator will thus be effectively protected against entrained damaging water.

The drawing selected to disclose this invention and the specification thereof are in terms of my improvements in one practical physical form. There are, however, other versions embodying the same principles, some of which employ more and some less structure, consequently obvious modifications, rearrangements and eliminations can be indulged without departing from the spirit of my invention, therefore I wish to be limited only by the following claims.

I claim:

1. In combination, in a prime mover having a cooling means therefor including a fan, a generator driven by the prime mover, and means for collecting, filtering and conducting a portion of the air currents established by the fan into the generator for cooling the latter, said means being so located with respect to the fan that the latter will remove heavy particles from said air before passing through the filtering means, said generator having an air inlet to receive said air, and an outlet for the heated air, said outlet being so located in another portion of the air currents established by said fan that the last mentioned currents will create a suction through said outlet on the air within the generator and assist the first mentioned currents to force air through the generator.

2. In combination, in a prime mover having cooling means therefor including a fan, a generator driven by the prime mover, and means for collecting, filtering and conducting air set in motion by the fan into the generator for cooling the latter, said generator having an air inlet to receive the air, and an outlet for the heated air, said air collecting and filtering means being so located with respect to the fan that the latter will remove heavy particles from said air before passing through said filtering mea 3. In combination, in a prime mover having cooling means therefor including a fan, a generator driven by the prime mover, and means for collecting, filtering and conducting air set in motion by the fan into the generator for cooling the latter, said generator having an air inlet to receive said air, and an outlet for the heated air, said air collecting and filtering means being remotely located from said outlet and so located with respect tothe fan that the latter will remove heavy particles from said air before passing through said filtering means.

4. In combination, in a prime mover having a cooling means therefor including a fan, a generator driven by the prime mover, and means for collecting, filtering and conducting a portion of the air currents established by the fan into the generator for cooling the latter, said means being so located with respect to the fan that the latter will remove heavy particles from said air before passing through said filtering means, said generator having an air inlet to receive said air, and an outlet for the heated air.

5. In combination, in a prime mover having cooling means therefor including a fan, a generator driven by the prime mover, an inlet behind said fan for conducting air set in motion by the fan into the generator for cooling the latter, there being an outlet in said generator for the heated air, means associated with said inlet to collect water entrained with the air delivered by said fan and means to discharge said water.

6. In combination, in a prime mover having cooling means therefor including a fan, a generator driven by the prime mover, an inlet behind said fan for conducting air set in motion by the fan into the generator for cooling the latter, there being an outlet in said generator for the heated air, said inlet being so located with respect to said fan that the latter will remove heavy particles from the air set in motion thereby before the latter passes into said inlet, means associated with said inlet to collect water entrained with the air delivered by said fan and means to discharge said water.

LOUIS A. KOCH, JR. 

